Stamping die oil leakage hole manufacturing method, storage medium and CNC die machining tool

The invention relates to the field of machine tool machining and particularly relates to a stamping die oil leakage hole manufacturing method, a storage medium and a CNC die machining machine tool. The method comprises steps of reading a lower die structure in a 3D graph; obtaining all horizontal planes on the 3D drawing, judging whether the adjacent plane of each horizontal plane has a vertical plane higher than the horizontal plane or not, and if so, identifying a space defined by the horizontal plane and the adjacent vertical plane as a groove; screening out a closed groove from the found grooves, wherein the closed groove can form a closed space after the upper die and the lower die are pressed together; an oil leakage hole with a set size being formed in each closed groove; and processing codes being converted according to the 3D graph and being sent to an external CNC die processing machine tool for processing. The method is advantaged in that the closed groove capable of defining the closed space after